Nicholas William Bethell, 4th Baron Bethell (19 July 1938 – 8 September 2007) was a British politician. He was a historian of Central and Eastern Europe. He was also a translator and human rights activist. He sat in the House of Lords as a Conservative from 1967 to 1999.
He served as an appointed member of the European Assembly from 1975 to 1979, and as an elected Member of the European Parliament from 1979 to 1994, and from 1999 to 2003.